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Finding the Fourth Proportional to 6,664,657.92, 9,989,426.94 and 3,062,980.77

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Solution

The fourth proportional to 6,664,657.92, 9,989,426.94 and 3,062,980.77 is: 4,590,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664,657.92 : 9,989,426.94 = 3,062,980.77 : x
  2. Step 2: Convert to fraction form
    6,664,657.92/9,989,426.94 = 3,062,980.77/x
  3. Step 3: Cross multiply
    6,664,657.92x = 9,989,426.94 × 3,062,980.77
  4. Step 4: Simplify right side
    6,664,657.92x = 30,597,422,620,539.94
  5. Step 5: Solve for x
    x = 30,597,422,620,539.94/6,664,657.92
  6. Step 6: Final answer
    x = 4,590,996.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.